Help. African Marigolds will not flower?

Mountainranger

Hi
I sowed some Thompson and Morgan Sunspot mixed African Marigold seeds back in April. Followed all the instructions, thinned them out, have given them plenty of sunlight and water and it’s now July and 13 weeks later they are still not flowering some have even gone black around the base of the stem and died. 

I know it’s getting too late in the season now but what can have gone wrong? 

GardenGrower11

Hard to be sure without pictures, so this is only a random possibility, but slugs and snails love Tagetes French/African marigolds. Is there any chance the stems/heads have been bitten off?

mcpbowman

Mine have barely done anything yet, I'm putting it down to the weather because nothing else seems to be doing much either.

I'm not sure about them turning black though, pictures would definitely help.

debs64

Mine are the same! Healthy plants but no flowers not even buds! I bought plants in flower they are fine but the ones I grew from seed.... nothing! 

Lyn

I haven’t grown the African ones this year but the French  ones I grew from seeds are flowering profusely. 
Could have been slugs having a chew at the stems. 

Maybe you've fed them, that will promote green and no flowers with annuals, they need to think they may die then they start to flower so as to preserve their seeds. After that you can feed them, keep dead heading. 

I wouldn’t  buy T&M seeds, never had much success with them.  My parents wouldn’t touch them on any account.

Bijdezee

Same problem here with Tagetes. Minimal growth and flowers. It was my first time shoeing these so I wasn't sure about them. 

Dirty Harry

I have a dozen and they’re all flowering superbly. All bought as plants though.